1000/2=500···0
500/2=250 ···0
250/2=125···0
125/2=62···1
62/2=31 ···0
31/2=15 ···1
15/2=7 ···1
7/2=3 ···1
3/2=1 ···1
1/2=0 ···1
所以的数倒过来即为：
1111101000